Mounting The Ncs - Siemens SIPART PS2 Operating Instructions Manual

B.2.2

Mounting the NCS

Function
The positioner facilitates the separate installation of the position detection system. The stroke
or rotary angle is measured directly at the actuator by means of a non contacting sensor. It is
therefore possible to install the controller unit at some distance away, e.g. on a mounting pipe
or similar. The positioner is connected to the position detection system by means of an
electrical cable.
Such a separate installation is useful whenever the ambient conditions at the valve exceed the
specified positioner values.
The NCS consists of a molded sensor for fixed installation and a magnet. The magnet is
mounted to the spindle on linear actuators, or to the stub shaft on part-turn actuators. The
sensor housing is mounted onto the console on part-turn actuators and to the bracket on linear
actuators. The bracket can be a NAMUR type, or any other mounting bracket.
Auxiliary power is supplied to the NCS via the EMC filter module 6DR4004-6F and EMC-
compatibility is ensured at the same time.
EMC filter module ordering options:
● Installed in the positioner; see Catalog FI 01
● For retrofitting in the positioner; item number 6DR4004-6F. For information on retrofitting
the EMC filter module, refer to the positioner operating instructions, chapter "Installation/
Mounting".
Figure B-3
SIPART PS2 with PROFIBUS PA
Operating Instructions, 05/2019, A5E00127926-AC
①
Pneumatic line
②
Pneumatic line for double-action actuators
③
Position detection system (10 kΩ potentiometer or NCS)
④
Electrical cable
⑤
Retrofittable EMC filter module (in the positioner)
⑥
Positioner
Separate installation of the NCS and positioner
External position detection
B.2 Non-Contacting Sensor
311